The UV-visible absorption bands of the new complex were obtained using p-amino-N, N-dimethyl aniline as an electron donor with ferric nitrate as an electron acceptor in methanol at 25degreesC. The values of association constant K-AD. molar extinction coefficient epsilon(AD), and absorption band energy of charge transfer complex h epsilon(CT) were calculated. The ionization potential of the donor I-D, was calculated from the complex band energy. The kinetics of the above association reaction were studied. This reaction was found to be a first order. The values of the rate constant of the forward reaction k(1), the rate constant of the reverse reaction k(-1), and the half-life t(1/2) were calculated.